Try right-clicking the speaker/volume icon. Select Playback Devices and choose the regular soundcard/speakers as your default playback device.
Thanks for the suggestion but, if I do that I can get sound but not from the deck as it disables USB as the sound source. There doesn't seem to be a separate recording and playback control.
My own setup is on XP where there isn't a problem.. I was planning to bite the bullet and update fairly soon.. But this is a killer for me as I have a touch of RSD and need to use speech recognition with my Sennheiser connected through a USB sound card to get the cleanest signal.